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If the sum of first 7 terms of an A.P is...

If the sum of first 7 terms of an A.P is 49 and that of 17 terms is 289, find the sum of first n terms.

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`n^(2)`
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If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.

If the sum of first term of an A.P is 49 and that of 17 terms is 289. Find the sum of first "n" terms. OR The sum of the third and seyenth terms of an AP is 6 and their product is 8. find the sum of first sixteen terms of the A.P.

If the sum of the first 14 terms of an AP is 1050 and its first term is 10, find the 20th term.

The sum of the third and seventh terms of an A.P is 6 and their product is 8 find the sum of first sixteen terms of the A.P.

The sum of the third and seventh terms of an AP is 6 and their product is 8 find the sum of first sixteen terms of the A.P.

The sum of first 7 terms of an AP is 63 and the sum of next 7 terms is 161. Find a_(28) .

The sum of the first 8 terms of an A.P. is 100 and the sum of its first 19 terms is 551. Find the first term and the common difference of the AP.

If the sum of first p terms of an A.P is equal to the sum of the first q terms , then find the first (p+q) terms .

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The sum of first 14 terms of an AP is 1505 and its first term is 10. Find its tenth term.

SUBHASH PUBLICATION-ARITHMETIC PROGRESSION-Exericise 1.3
  1. In an AP : given d = 5, S(9) = 75, find a and a(9).

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  2. In an AP : given a = 2, d = 8, S(n) = 90, find a and a(n).

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  3. In an AP : given a = 8, a(n) = 62, S(n) = 210, find n and d.

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  4. In an AP : given a(n) = 4, d = 2, S(n) = -14, find n and a.

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  5. In an AP : given a = 3, n = 8, S(n) = 192, find d.

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  6. In an AP : given l = 28, s = 144 and there are total 9 terms find a...

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  7. How many terms of the A.P : 9, 17 25,… must be taken to give sum of 63...

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  8. The first of an A.P is 5, the last term is 45 and the sum is 400. Find...

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  9. The first and the last terms of an A.P are 17 and 350 respectively. If...

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  10. Find the sum of first 22 terms of an A.P in which d = 7 and 22nd term ...

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  11. Find the sum of first 51 terms of an A.P whose second and third terms ...

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  12. If the sum of first 7 terms of an A.P is 49 and that of 17 terms is 28...

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  13. Show that a(1), a(2), ….,a(n),… form an A.P where an is defined as bel...

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  14. Find the sum of the odd numbers between 0 and 50.

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  15. A contract on construction job specific a penalty for delay of complet...

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  16. A sum of Rs. 700 to be used to give seven cash prizes to students of a...

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  17. In a scholl students thought of planting trees in and around the schoo...

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  18. A spiral is made up of successive semicircles, with centres alternatel...

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  19. 200 logs are stacked in the following manner : 20 logs in the bottom r...

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  20. In a potato race, a bucket is placed at the starting point, which is 5...

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